Use MSAA_Role directly from BrowserAccessibility.

ui/accessibility/platform/ax_platform_node_win.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_
 #define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 250 matching lines @@
   //
   // IServiceProvider methods.
   //
 
   STDMETHODIMP QueryService(REFGUID guidService,
                             REFIID riid,
                             void** object) override;
 
  protected:
   AXPlatformNodeWin();
+
   int MSAAState();
 
+  int MSAARole();
+  std::string StringOverrideForMSAARole();
+
   // AXPlatformNodeBase overrides.
   void Dispose() override;
 
  private:
-  int MSAARole();
-  std::string StringOverrideForMSAARole();
-
   int MSAAEvent(ui::AXEvent event);
+  bool IsWebAreaForPresentationalIframe();
   bool ShouldNodeHaveReadonlyState(const AXNodeData& data) const;
   bool ShouldNodeHaveFocusableState(const AXNodeData& data) const;
 
   HRESULT GetStringAttributeAsBstr(
       ui::AXStringAttribute attribute,
       BSTR* value_bstr) const;
 
   void AddAlertTarget();
   void RemoveAlertTarget();
 
@@ skipping 14 matching lines @@
                     IA2TextBoundaryType ia2_boundary,
                     LONG start_offset,
                     ui::TextBoundaryDirection direction);
 
   // Many MSAA methods take a var_id parameter indicating that the operation
   // should be performed on a particular child ID, rather than this object.
   // This method tries to figure out the target object from |var_id| and
   // returns a pointer to the target object if it exists, otherwise nullptr.
   // Does not return a new reference.
   AXPlatformNodeWin* GetTargetFromChildID(const VARIANT& var_id);
+
+  // Returns true if this node is in a treegrid.
+  bool IsInTreeGrid();
 };
 
 }  // namespace ui
 
 #endif  // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_